PhysicsMedium145×since 2002Q6548A particle is moving 5 times as fast as an electron. The ratio of the de-Broglie wavelength of the particle to that of the electron is 1.878 ×\times× 10^–4. The mass of the particle is close toA1.2 ×\times× 10^–28 kgB9.1 ×\times× 10^–31 kgC4.8 ×\times× 10^–27 kgD9.7 ×\times× 10^–28 kgCheck answerSkip